if you want to shortcut the program, and leave it where it is you can either use sym. links or the alias command.
(note this assumes you've made it executable,
chmod +x [script file])
sym links allow you to create a shortcut that behaves like the file in question.
sudo ln -s [script start-up file] /usr/bin/[name]
despite being in /usr/bin it will start in the directory you call it from.
alias allows you to give an name to a command, or series of piped commans, that you use regually, for example its fairly common to have the update/upgrade commands combined into a single, alias'd, one.
alias [name]="sh /path/to/script/[file name]"
assuming that your script runs with sh, (this could also be bash, for more complex tasks there is a difference).